Visualize missing data in SAS

April 20, 2016
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Visualize missing data in SAS

You can visualize missing data. It sounds like an oxymoron, but it is true. How can you draw graphs of something that is missing? In a previous article, I showed how you can use PROC MI in SAS/STAT software to create a table that shows patterns of missing data in

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Looking for cheaters in the Boston Marathon data

April 19, 2016
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With more and more data available these days, and computers that can analyze that data, it's becoming feasible to look for fraud in events such as the Boston Marathon. So put on your detective hat, and follow along as I show you how to use SAS to be a data sleuth!

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R’s Growth Continues to Accelerate

April 19, 2016
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R’s Growth Continues to Accelerate

Each year I update the growth in R’s capability on The Popularity of Data Analysis Software. And each year, I think R’s incredible rate of growth will finally slow down. Below is a graph of the latest data, and as … Continue reading
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Maximize your conference experience by getting SAS certified

April 19, 2016
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SAS users are always looking for ways to optimize, maximize, and prioritize just about everything.  And that includes the precious commodity of time away from the office, even for users at a premier event like SAS Global Forum.  Sure attendees get to learn and share with the best and brightest

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Examine patterns of missing data in SAS

April 18, 2016
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Examine patterns of missing data in SAS

Missing data can be informative. Sometimes missing values in one variable are related to missing values in another variable. Other times missing values in one variable are independent of missing values in other variables. As part of the exploratory phase of data analysis, you should investigate whether there are patterns

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How much will that taxi cost me?

April 15, 2016
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Are you afraid that if you take a ride in a taxi, you might get "taken for a ride"? If trying to figure out the reasonable price of a taxi is a bit voodoo/black-box to you, here is a SAS data analysis of over 12 million NYC Yellow Cab rides, that

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Getting down and dirty with lake water quality data

April 13, 2016
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Just like my hero Mike Rowe on the Dirty Jobs TV show, I'm finally diving into an area involving water quality ... and poop! Let's take a graphical look at just how clean (or dirty) the water is, at the lake where my Raleigh Dragon Boat Club practices... Before we get

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Head-tail versus head-head: A counterintuitive property of coin tosses

April 13, 2016
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Head-tail versus head-head: A counterintuitive property of coin tosses

I saw an interesting mathematical result in Wired magazine. The original article was about mathematical research into prime numbers, but the article included the following tantalizing fact: If Alice tosses a coin until she sees a head followed by a tail, and Bob tosses a coin until he sees

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Set attributes of markers in PROC SGPLOT by using ODS style elements

April 11, 2016
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Set attributes of markers in PROC SGPLOT by using ODS style elements

The SG procedures in SAS use aesthetically pleasing default colors, shapes, and styles, but sometimes it is necessary to override the default attributes. The MARKERATTRS= option enables you to override the default colors, symbols, and sizes of markers in scatter plots and other graphs. Similarly, the LINEATTRS= option enables you

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